1020000211949 has 2 divisors, whose sum is σ = 1020000211950. Its totient is φ = 1020000211948.

The previous prime is 1020000211931. The next prime is 1020000212039. The reversal of 1020000211949 is 9491120000201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 714515184100 + 305485027849 = 845290^2 + 552707^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020000211949 - 2³⁶ = 951280735213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020000411949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510000105974 + 510000105975.

It is an arithmetic number, because the mean of its divisors is an integer number (510000105975).

Almost surely, 2^{1020000211949} is an apocalyptic number.

It is an amenable number.

1020000211949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020000211949 is an equidigital number, since it uses as much as digits as its factorization.

1020000211949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 1020000211949 in words is "one trillion, twenty billion, two hundred eleven thousand, nine hundred forty-nine".